Non-blinding headlight



G. E. BREWER.

NON-BLINDING HEADLIGHT. APPLICATION FILED MAR. 23. 191a.

Fy -l Patented Mar. 23,1920.

Imelda? G'rmwiae EBrewer f /M7 IW unrrnn STATES PATENT OFFICE.

GRANVILLE. n. BREWER, or LONG BEACH, CALIFORNIA.

NON-BLINDING HEADLIGHT.

Specification of Letters Patent. Patented Mar. 223, lQZQ.

Application filed March 23, 1918. Serial No. 224,346.

light from the illuminating element will be conserved and the roadway or other space in front of the headlight will be brilliantly illuminated and yet thelight will not have a blinding effect upon drivers meeting said headlight.

@bjects are, to comply with the trade rules, andto illuminate the road to as good or better efl'ect than heretofore, with lights of smaller size and less power than heretofore required; to economize the electricity, gas or other illuminating source and at the same time to minimize the first cost of the headlight construction and installation.

It principle of this invention is the lore tion of the light at the rear end of a down wardly inclined elongated tube, the top and side walls of which at the front portion of said tube serve to bend and properly direct the rays from. the illuminant and to prevent any glaring reflections from the illuminant at the rear end of the tube from being so projected as to reach the eyes of occupants of vehicles approaching the headlight from in front thereof.

The interior of the elongated tube may be a reflector throughout from end to end and in some instances it may be found advisable to dull to a greater or less extent the floor of the tube at the front end so as not to allow the reflection from such floor to be of full power;

" and in the form at present deemed best the tube is constructed as a cylinder flattened at the front end so as. to spread the light horizontally, thus widening the field of illumination laterally and narrowing it vertically; and said cylinder is arranged aslant downwardly and forwardly so that the illuminant at the-the rear of the same is mainly above the level of the flattened top margin of front end of the cylinder. That is to say,

the headlight comprises reflector casing having an internal surface developed from an oblong rectangular parallelogram and which is so disposed that it is practically circular in. cross-section at the rear, and ovoid atthe front end; said casing being so mounted and arranged that the top margin of the front end is practically on 'a level with the center of the rear end; the illuminant being placed at the center of the rear end of said reflector.

Further objects of the invention are simplicity, cheapness ofconstruction, easeof in stallationand a distinctive appearance.

Further objects, advantages and features of invention may appear. from the accompanying drawing, the subjoined detail "description and the appended claims.

The accompanying drawing illustrates the invention.

Figure l is a frort elevation of an automobile provided w'th headlights in accord ance with'this invention. 7

l ig- 2 is a side elevation of the same.

Fig. 3 is an enlarged longitudinal section till of the headlight detached from the tt'tltOlllO- bile.

Fig. t is a direct front elevation of newly invented headlight viewed at the level of the front end.

Fig. 5 is a plan in axial section.

Fig. 6 is a plan on reduced scale of a sheet from which the reflecting and shielding headlight tube, may be bent.

The tube 1 may be variously constructed, and as indicated by l ig. 6 it may be formed from an oblong rectangular sheet of metal a bent toform a cylindrical tube or elongated shell the circumferential traces of which from end to end of the shell are equal in length, which tube or shell is then somewhat flattened at its front end 2, to a greater or part of the vehicle to which the headlight is to be applied; and from the inclination of the tube, and the lateral spread and vertical height to which the light isto be thrown. lhe rear end 3 of the tube is cylindrical and the illuminating element t is mounted there in. The longitudinal traces of the shell are straight.

'lhe illuminating element 4.- is shown as consisting of the electric lamp 4; mounted. in. a concave reflector 5 of any suitable character. k The inside walls 6 of the tube are bright except on the floor 'l where the surface is dulled by the application ofp'l'aint or by some other means to prevent therellll lllll lllii able medium to 'ing either tin, brass, copper, nickel, or any polished metal or any suitable material of i any kind that will reflect a large percentage oflight falling thereon.

The-dulled floor portion 7 of the tube is triangular in shape and the dulling medium may be gray or yellow paint or other suitprevent glare from said floor.

The proportions of the tube may vary In practice the front end of the laterally flaring tube may be provided with a transparent pane 8 made of glass or other suitable transparent material.

The tube may be of any desired diameter at the rear end, as for instance, six inches diameter, and may be flattened at its front end to an elliptical form having a horizontal major axis of about nine inches and vertical depth 'at the center of about four and onehalf inches, and the length of said tube from front to back may be about three feet, more or less; and said tube may be either mounted inside or outside the radiator hood while the front flattened end of the tube may be flush with, or roject beyond, the front end of the radiator ood as may be desired.

In practical use the light. rays from the cylindrical illuminating element at the rear will be reflected back and forth from the .wall surfaces and finally emitted at the front, practically all the light energy being thus emitted; but the same is directed forward in an illuminating zone limited as to 40 its vertical projection by the top and bottom of the front end of the tube that is permanently held in its flattened form by the oval frame 9 which holds the pane or glass front 8.

The tube may be provided at any desired place with a side opening 10 for emission of a side light and said opening may or may not be provided with a colored or unicolored glass 11.

In Figs. 2 and 5 two side lights 10 are shown. I do not limit my invention to the The flare of bright light reflected from the bright side wall 12 will be projected to the side ofv the road to illuminate the same in accordance with present requirements.

The side lights may be located at any dc"- sired point along the tube and thus the one illuminant 4 is made to furnish illumina- 'tion for both a head light and a side light.

detachably held in place by any suitable means as indicated at 13.

The light emitting opening or pane 8 is preferably a plain plate of clear glass and offers practically no obstruction to the passage of light; but the vertical distribution of the light is limited and the lateral distribution of light is proportionately increased by the horizontal elongation of the light emitting opening at 8 produced by flattening the tube.

I claim:

1. A headlight comprising a casing formed of a cylinder circular at the rear end and somewhat flattened at the front end: said casing being so mounted and arranged that it is normally .aslant downwardly toward the front end; and an illuminant at the rear end; the top margin of the front end of said casing being practically on a level with the center of the rear end and the illuminant being placed at said center.

2. A headlight compr smg a cylinder, c1rcular at the rear end and somewhat flattened at the upper margin of the front end; said cylinder being normally arranged aslant downwardly toward the front end; and an illuminant at the center of the rear end arranged practically at the level of the flattened upper margin of the front end; the interior of the cylinder constituting a reflector and the floor of such reflector being dimmed.

3. A head light comprising a reflector casing having an internal surface fonned from an oblong rectangular parallelogram and which is so disposed that it is practically circular in cross-section at the rear and ovoid at the front end; said headlight being mounted so that the top margin of the front end is practically on a level with the center of the rear end; and an illuminant placed at the center of the rear end of said reflector.

In testimony whereof I have hereunto set my hand at Los Angeles, California, this 11th day of March, 1918.

GRANVILLE E. BREWER. lVitness:

JAMES R. TOWNSEND. 

